Mixing-machine.



PATENTED JULY 16, 1907. A. J. UROPP.

MIXING MACHINE APPLICATION FILED AUG. 9, 190B.

2 SHEETS-SHEET 1- d-ndrew- J Crop 0 PATENTED JULY 16, 1907. I

A J. GROPP. MIXING MACHINE.

APPLIOATIQN IILED AUG.9. 190B.

2 BHEETS*SHIBET 2.-

PATENT ANDREW J. OROPP, OF OHlCAGO, iLLtNoIs.

MIXING-MACHINE. I

Specification of Letters Patent.

' Patented July 1 e, 1 90?.

Application filed August 9,1QO6. Serial No. 829,804.

new and useful Improvements in l\lixing-Machines,

of which the following is aspecification.

' This invention relates to improvements in a mixing machine, and while it is more especially intended for use in combining material to-produce a concrete nix- 1O ture suitable for construction and building purposes,

yet it is applicable and may be employed for mixing other suitable materials.

The principal-object of the invention is to provide a portable machine of the above-named character,

[5 which shall be simple and inexpensive in construction, strong, durable and so .made that its parts may 'beeasily assembled or readily detached, for the purpose of conveniently handling the same, and a1so to operate in such a manner as to intermingle the materials rapidly and thoroughly.

Another object of the invention is to provide simple and eificient ineans for the discharge of the materials after being mixed by the machine.

Other objects and advantages of the invention will 2 be disclosed in the subjoined description and expla nation. In order to enable others skilled in the art to which my invention pertains, to make and use the same, I will now proceed to describe it, referring to the accompanying drawings, in which Figure 1 is an end view in elevation of a mixing machine embodying my invention, showing the parts in position ready foroperation. Fig. 2 is a vertical cross-sectional view taken on line 2, 2 of Fig. 3 look- 3 ing in the direction indicated by the arrows. Fig. 3

is a longitudinal sectional view taken on line 3, 3 oi Fig.- 1 looking in thedirection indicated by the arrows. Fig. 4 is a plan view of a'portion of a rotary drum, showing it detached from the supporting-frame.

49 Fig. 5 is a detached perspective view of one of the mixing or stirring arms; and Fig. 6 is a perspective view of a portion of the door of the drum, showing the handle for opening and closing the same attached thereto.

Like numerals of reference, refer to corresponding parts throughout the different views of the drawings. The main or supporting frame cohsis'ts of two and pieces 10, which are substantially A;shaped, and are united together near their lower portions by means of a cross-bar 1], as well as by means of an inclined chute 12, which serves the double purpose of assise ing in bracing the end pieces 10 and securing them together, as Well as receiving the'mixed material when emptied ,from the rotary or mixing-drum. As'shown in Figs. 1 and 3, the upper horizontal portion of each of the end pieces 10 is provided with a journal-box desired to operate the machine manually.

13, in which is transversely located a hollow or tubular shaft 14, which is provided with a series of perl'orations 15, for the discharge of water into the drum. One endoi' the tubular shal'tl l ccnnlnunicates through a pipe 16 with ,a tank 17, or other source of watt-r sup ply. Rotatably mounted on the shaft 14 between the and pieces 10 of the main 'framc the mixing drum 18, which is cylindrical in shape and is proletably made otmetal, and has each of its ends closed, as shown. One end of thedrum. 18 has nioun'tod thereon a gear .19, .whichmeshes with a pinion 20, which is mounted on a shaft 21 journaled on a suitable bracket 22 on one of t e end pieces on the main or supporting frame. The shaft 21 may also have mounted thereon a pulley 23, to which power may. be applied for rotating the drum, or a orankhandle 24 connectedto thesaid shaft may be used, when it is The drum lgjs provided in its peripheral wall with an opening 25, which is closed by means of a door 26 rigidly mounted at one of its side'edges on a rod-or shaft 27,

which is journaled in the ends of the dr nnn m their peripheries and at or near one edge of the opening 25, as will be clearly understood by relercndo to Fig. 2 of the drawings. The shaft 27 extends through one of the endsof the 'drum and has secured thereon a handle 28 used for opening and closing the door. Secured to that end of the drumadjacent to the handle 28 on the shaft 27 is a strap or keeper 29, ivhich, as shown in Figs. 3 and 4, is located at a slight distance from the end of the drum, and is provided near each of its euds on its inner surface with a hotch 30 to engage the handle 28 so as tohold the door in its closed or open position, for it will be understood that the handle 28 extends betweenthe strap 29 and end of the drum.

'Located within the drum and extending from one end thereoi to. the other at suitable distances from the tubular shaft 14, and at suitable distances apart, are a number of flat bars 31 and a number of hers 32, which latter bars are preferably angular in. cross-section.

Radially located in the drum 1S and secured at one oi:

their ends to the inner periphery of the drum are a number of arms 33, which are angular in cross-section, as shown in Figs. 8 and 5, and have their other ends secured to the bars 3i, and for this purpose the ends of the arms 33 are provided with aperturcd flanges 34, which flanges will abut against the periphery of the drum and against the bars Bl, to which parts they inay be fastened by means oi bolts or rivets. lladially located in the drum and secured at one ol their ends to the'inner periphery of the drum are a series of arms 35, which are preferably flat, as shown in Figs. 2 and 3,

and have their other ends secured to the bars 22, which bars as before stated, are preferably angularin cross section to afford good supports for said arms.

By reference to Figs. 2 and 3 of the drawings, it will inclined inwardly,

2' be semi that tho angular arms 33 are loomed radially yet diametrically opposito moh other, and that the some may be said of the Hot arms 35, and further, that the arms 33 and 55 are alternately disposed with respect to one another, but disposed in longitudinal rows on the inner surface of the drum. In itlinement with tho arms and at each end of the drum is located an arm or bar 36,- each of which has its outer end sogured to the periphery of the drum and their inner ends resting on the hars32. Eeoh of the arms or bars 36 is as shown in Fig. 3, so that the mm t-eriztl within the drum acted on hy said arms will ho thrown. towards the middle of the drum or away from the ends thorool. I

The operation of thc machine is simple zuuhas followi :---Tn plztco the nlnterial in the drum the door 26 is opened by turning the crztnk-handleflituil the lower position, shown in Fig. 2 when it is eviclont that n 'suflicient quantity of the material may he deposited through the: door into the drum, whon by applying power to the shaft 21, the drum will be rotated through the instruznontality of the pinion 2.0 on said shait, Quid the gz-ar 1.) with which said pinion inoshos. After the limterietl has been deposited in the drum and hofore the hitter is rotated, the cloor 26 should he closed by raising the handle 28, whirh nay he (ranged to tang-ago one of thonotches 3G in tho strap or keeper 2.) located on one side of the drum. .In the rotation of the drum, watt-r may ho distributed through the orfomtiohs 15 in' the tubnlar shaft 14, and it apparent that as the drum rotates the arms 33snci 35 will thoroughly stir and mix. thenm'toriai, and that the. arms or iJZLTS 36 will not to throw the material inwardly from the cmis of the drum, while the or"\ilar-slm-pod arms 33 will divide it, as tho-"spoil: of 'ingulsr arh s will h:- irrosentetl forwardly r matoiriztlytlfu s os it to he nwwsri nutti in] in th.. amount or hthor or f n drum, 11 snll'ioiont quztn'tity tr utor shonhl h to tho rnz'tterirrl tn rm'u' A it zz-ini-llg gnill or ihlmh illii? in'l'rmn, and onough muii-rinl zunlwulzor to :thout llatii fill the drum shnnhl ho rt-mploy 'l, Wh'oh tho mnto nil is in this condition, itis apparent that in the revolution of the drum it will maintain substantially s level 1 position with its nppor surface, andthat some will he carried upwardly by the stirring arms from which it I will fall back to mingle \irith the main body of the material. As thestirring tmns extend from the peripheral Wall of the drum to near its oenter,v it is evident that they will act on the entire mass 01- the material so as to thoroughly and qnicklymix it, and not merely agitate or mix the portionof the material-which lies close to the periphery of the drum as is done by the old style mixing ma chines. 1 Having thus fully describec l my invention, what. I claim as nownnd desire to secure by-Letters-Patomt,

- 1. In :l mixing machine, the combination with the main 1 frame. of a perforated tubular i shaft nmunlccl theteonand having Communication with a m ply of water, :i druin mounted on t'heflahaft and halvingun-oprriing In its 'peripherall wall, a door hinged to clo e said opel'ning, :1 series of radially disposed and spaced apart arms secured stone of their ends to the inner surface of the peripheral Wall of the drum and extending at their other ends to nnar th'e szliil shaft, the. said arms arranged in lo'nglttidinal rows 'th Msnectlo the drum the arms of one of .i'he ,rows lining:alte nately (In sml with respect to the arms in I the row a meant therotoi an incllnedchutq rno'unted on I the lower portion of the main frame beneath the drum, ud'means to rotate the drum, substantially as describeil.

2. 1n n mixing machine, the-combination with the main i frame. of a perforated lnlxuizu: shaft mounted thereon,

means imsngiplying Wfll'Gl to said shaft, a drum mountngl m crossnecflon a nd railially disposed and spaced apart arms secured ilt one'jol their onds to the inner surface 02 the peripherai wnllof the drum and extending at their. other ends to near tho said shaft. the shid arms arranged in'longitndinal rows with respect ,m r n ies of spaced apart and radially. disno in longitmlini l rows alternately shapec'! arms an in- A at ear}?! and of the P of the rows of said and int-um: i'fVllfri'zlfQ tho'drfim; su'lmlnntially-zis (lescrih-Qd.

on the shaft, a series of angular lmoiuaira. (mov e 

